Feeds

Fake site punts Trojanised WordPress

Backdoored blogging code blag

Protecting against web application threats using SSL

Fraudsters have set up a fake site featuring a backdoored version of the WordPress blogging application as part of a sophisticated malware-based attack.

The fake Wordpresz.org site offered up what purports to be version 2.6.4 of the open source blogging tool. In reality all but one of the files are identical to the latest pukka (2.6.3) version of WordPress.

The crucial difference comes in the form of a Trojanised version of pluggable.php, according to Sophos virus researcher Paul Baccas. Sophos detects the malicious code as WPHack-A Trojan.

"The new PHP contains call backs to the Fake WordPress site and looks to be stealing credentials," Baccas reports.

The issue came to light via a posting by blogger Craig Murphy who reports that he received a "High Risk Vulnerability Warning" from the spoofed WordPress domain when he logged into his admin account.

Peter Westwood, one of WordPress's lead developers, responded promptly to our requests for comment on the attack, which he reckons relies on exploiting older (vulnerable) code.

It looks like sites which have not upgraded to 2.6.3 are being exploited in an interesting way whereby a hacker, probably using an automated script, is hacking into sites with the vulnerability and changing the settings of one of the dashboard modules to point to a different feed thereby encouraging people to go to a different site which is offering a dodgy upgrade.

"We recommend that people upgrade as soon as possible when we release a security release so as to ensure they are not vulnerable to issues which will likely have exploits in the wild.

Also in the upcoming 2.7 release of WordPress we are including a built-in upgrade mechanism within WordPress which will allow people to upgrade automatically with ease. I would however stress the need with any piece of software to check that an upgrade is real by visiting the website of the software provider manually rather than relying on a link that you have been provided. Otherwise, as with bank phishing scams there is the potential for someone to trick you into doing something you didn't want to do.

The fake site attack represents a rare but not unprecedented attack on users of the open source blogging package.

Backdoored code on a fake site is one thing, but a vulnerability on one of the project webservers allowed hackers to upload a backdoored version of WordPress 2.1.1 in March 2007. WordPress responded to the attack by purging its servers and urging users to upgrade to version 2.1.2 of the software as explained in an advisory here.

Two months prior to this, in January 2007, many blogs were attacked using a WordPress exploit current at the time. Users often run sites using older versions of the blogging software, if a survey from last year is anything to go on.

Chris Wysopal, CTO of application security tools firm Veracode, recently told us that applying 'traditional' backdoor techniques in web 2.0 applications such as Wordpress and Content Management Software required less skills than attacking traditional software distributions. "It's the Software as a Service version of a backdoor," he said.

"Planting backdoor code is a lot easier to do with web apps. It's much harder to break into a source code repository than it is modify PHP or scripted components in a Web 2.0 application, especially when developers don't know what's in the code half the time."

The latest version of WordPress (version 2.6.3), published on 23 October, is available through Wordpress.org. ®

Reducing the cost and complexity of web vulnerability management

More from The Register

next story
Spies would need SUPER POWERS to tap undersea cables
Why mess with armoured 10kV cables when land-based, and legal, snoop tools are easier?
Early result from Scots indyref vote? NAW, Jimmy - it's a SCAM
Anyone claiming to know before tomorrow is telling porkies
TOR users become FBI's No.1 hacking target after legal power grab
Be afeared, me hearties, these scoundrels be spying our signals
Jihadi terrorists DIDN'T encrypt their comms 'cos of Snowden leaks
Intel bods' analysis concludes 'no significant change' after whistle was blown
Home Depot: 56 million bank cards pwned by malware in our tills
That's about 50 per cent bigger than the Target tills mega-hack
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
NORKS ban Wi-Fi and satellite internet at embassies
Crackdown on tardy diplomatic sysadmins providing accidental unfiltered internet access
UK.gov lobs another fistful of change at SME infosec nightmares
Senior Lib Dem in 'trying to be relevant' shocker. It's only taxpayers' money, after all
Critical Adobe Reader and Acrobat patches FINALLY make it out
Eight vulns healed, including XSS and DoS paths
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.